about the sandy hook shooting and i knew as one person, i couldn't do anything, but i knew president obama could. >> reporter: the president's first task is to convince members of his own party to support his plan. specifically the 11 democrats in the senate who have an a or b rating from the nra. without their support, diane, his plan doesn't have a prayer of passing. >> at the white house, jonathan karl. thanks, jon. >>> and now, we have breaking news from the faa tonight. the faa suddenly announced they are grounding the dreamliner. that new plane that ran into trouble. six of the planes are flying for united airlines here in the u.s. and for the latest on what's happened, abc senior national correspondent jim avila joins me. jim? >> reporter: diane, this is a huge blow to boeing. this is the faa telling united it cannot fly the dreamliner 787 starting right now. it's grounded until it can prove to the federal government that the airline has fixed the problem with the battery that continues to overheat. united is the only u.s. carrier flying the 787 so far. the plane of the future is ex